Astudent was conducting an experiment designed to study the law of conservation of mass. the student measured the mass of all the materials involved in the closed system reaction. the mass equaled 562g. what would we expect the mass to be after the reaction had occured?

Which of these is true for bacteria because they are prokaryotic cells? a. they can engulf body cells in order to make memory cells. b. they must invade viruses in order to reproduce. c. they are much larger than eukaryotic body cells. d. they can reproduce on their own outside of other cells.

The vaccine in a flu shot contains weakened flu viruses. how does a flu shot work with the immune system? a. it destroys lymphocytes. b. it destroys macrophages. c. it activates macrophages. d. it activates lymphocytes.

Describe how a non-resistant staphylococcus aureus bacterium can produce a bacterium that is resistant to methicillin